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21198 (1994 PX7)
Classification: Main-belt Asteroid          SPK-ID: 2021198
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1023733700223873 3.6261e-08  
a 2.779572284640157 1.4979e-08 au
q 2.495018102640718 1.0671e-07 au
i 1.870091138060856 3.7625e-06 deg
node 295.4824414975713 0.00011706 deg
peri 45.09185440251077 0.00011859 deg
M 278.9796045847501 2.0473e-05 deg
tp 2459777.440584186039
(2022-Jul-16.94058419)
9.7078e-05 TDB
period 1692.643063565712
4.63
1.3683e-05
3.746e-08
d
yr
n .2126851240814032 1.7193e-09 deg/d
Q 3.064126466639596 1.6513e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1156  
   data-arc span      10715 days (29.34 yr)  
   first obs. used      1992-02-28  
   last obs. used      2021-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50065  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:06:20  

Additional Information
 Earth MOID = 1.48597 au 
 Jupiter MOID = 2.28062 au 
 T_jup = 3.325 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.11   n/a MPO614063  

21198 (1994 PX7)          Discovered 1994-Aug-10 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 PX7 = 1999 TZ122 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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